Duty drawback AIR revision updates composite and customs rates and clarifies brand-rate provisional payment and shipping-bill declarations. Revision of the All Industry Rates (AIR) updates composite and customs drawback rates, adds and rewords tariff entries, aligns legacy items with residuary rates, and introduces or adjusts drawback caps. Amendments to Drawback Rules permit provisional payment of the Customs component for brand-rate claims where exporters declare a new shipping-bill identifier and tariff item; Central Excise fixation of brand rate later determines final entitlement, with EDI and transitional procedures specified. Authorities must ensure due diligence to prevent misuse and provide public guidance.